This is definitely a 1967. There are no side marker reflectors. They were the only year of the 2nd gen GM vans like that. From the photo you cannot tell if it is a Chevy or GMC. You'd need to see the emblem on the front.

1960 Chrysler Windsor ( PC 1 -L) .Front fender and front door part of the side chrome strip are missing.On 1961 Chryslers the front end of the wing shape curved down and rearwards in the middle of the front door,on 1960 models as here it sloped straight to the hood line.